A site being too clever?

I’ve just been browsing http://www.pecha-kucha.org/ ; although I haven’t witnessed it, I know that this presentation format has been used with some success by MBAs at Cass. The site cleverly includes a Google map and tries to work out where I am, and tells me where I might find Pecha Kucha events near me – a location-based mashup, in fact. It’s a pity that, while I’m in London, it concludes that I’m ‘somewhere near Horsham’